Proprietary DRM

Here are examples of proprietary programs and systems that
implement digital restrictions management (DRM):
functionalities designed intentionally to restrict what users can do.
These functionalities are also called digital handcuffs.

DRM is reinforced by
censorship laws that ban software (and hardware) that can break
the handcuffs. Instead of these laws, DRM ought to be illegal. Please
support our campaign
to abolish DRM.

The Amazon Kindle has DRM. That article is flawed in that it
fails to treat DRM as an ethical question; it takes for granted that
whatever Amazon might do to its users is legitimate. It refers to DRM
as digital “rights” management, which is the spin term
used to promote DRM. Nonetheless it serves as a reference for the
facts.

DRM
in Windows, introduced to cater to Bluray
disks. (The article talks about how the same malware would later be
introduced in MacOS. That had not been done at the time, but it was
done subsequently.)

DRM
in MacOS. This article focuses on the fact that a new model of
Macbook introduced a requirement for monitors to have malicious
hardware, but DRM software in MacOS is involved in activating the
hardware. The software for accessing iTunes is also responsible.

A further consequence of this malware is that users may have
trouble
playing
videos on auxiliary large screens. (The article, from a
publication whose name suggests it idolizes Apple, treats these
restrictions as irreproachable.)

That page uses spin terms that favor DRM,
including
digital “rights” management
and “protect”,
and it claims that “artists” (rather than companies) are
primarily responsible for putting digital restrictions management into
these disks. Nonetheless, it is a reference for the facts.